METHOD AND SYSTEMS FOR ESTIMATING REMAINING SERVICE LIFE OF A COMPONENT SUBJECT TO STRESS

摘要

A method is described for determining when a ceramic component on a platform should be replaced. The method includes determining the parameters v_o, K_c, n, and ψ_r for the component, where v_o and n are empirically determined parameters, K_c is a critical stress intensity factor, ψ_r is a geometry factor for the material in the form of the component, determining a relationship of between platform operational parameters to the generation of stress at the surface of interest of the component, determining an initial crack size of a crack within the component at installation, tracking operational parameters of the platform throughout a course of usage of the component, calculating the corresponding stress at the crack location due to the tracked operational parameters, and calculating a numerical solution that illustrates a crack growth rate velocity and tracks a size of the crack over time.